Question

1. what effect did the union victory at vicksburg have on the confederate garrison at port hudson?○ they dug in for a siege.○ they called for reinforcements.○ they surrendered.○ they switched sides.

Explanation:

The Union victory at Vicksburg gave the Union full control of the Mississippi River, cutting off the Confederate garrison at Port Hudson from supplies and support. With no hope of relief and facing a prolonged siege, the Port Hudson garrison surrendered on July 9, 1863, just days after Vicksburg fell.

Answer:

They surrendered.